as a sense, our hearing isn't as finely tuned a mechanism as taste is, I think that's part of the problem too.
and not everyone hears the same, but most everyone tastes similarly.
but going back to the idea that amp manufacturers putting high-end parts into their circuits and doing a lot of testing before approving an amp's recipe as suitable for production, is all just an exercise in overkill....
I think we need to figure out why an amp is made to perform to higher standards, or to more stringent thresholds of measurement, if anything under 1% is damn hard to tell one amp from another.
It's not just reliability concerns, unless...
hey, maybe that's why so many companies are just taking their business to China, they can't convince the buying public that one amp sounds better than another, so essentially they are all building the same amp, one that makes the most profits!
We cling to brands as a prestige item. If most knew that the prestige brands often come from the same place as a "lesser" brand. Heck some even use the same board.
They are a commodity. Plain and simple. Why? Because what is available is most often the case "Good enough". Why spend more for an inaudible improvement. Hey, if you want a certain look, or the pride of saying I rock brand X, that is perfectly fine. no judgement from me at all. I am attached to Sundown amps because I love the no nonsense black old fashioned heatsink. That's it. They provide the power to suit my needs. They all match. they do not sound better/worse than the Boston Acoustics, Cadence,Orion, Phoenix Gold,Rockford,Tru, Arc and Audison amps I cycled through in my own personal search for Amplifier nirvana.